Process of preserving poles, &amp;c.



" PATENT oFFio-E. 'i'

mums KoLossvARY AND-SAMUEL HALTENIBERGER, or BUDAPEST, A-ND ERNST .BERDENICH, orrfisrox 'LADANY, A'us'rmA-HUNGARmsm KoLossvAiw 'As-,

ns'ieiionc'ro SAID nan'rnnsnnenn AND ennnnmcnp Qrnoc nss or FEE-SERVING POLES, 8w.

To all may concern: 4

Be it known that; we, ANDREAS KoLoss- VARY, SAMUEL HAixrannniionn, and ERNST BERDENICI-I, subjects of the King of Hungary, residing Komssviinr. and HALTEN- BERGER -at-. Budapest and Bn'iioimioii at Piisptik Ladi'iny, ii 'the Empire of Austria- Hungary, have invented a new and'useful Improvement in Economical I Processes of Inipi'egnating'Timber; and we-do hereby exact description of the same.

The present application is a division of our application, Serial Number 590,099, for Letters Patent of the United States of declare the followiiigto be it full, clear, and

Aniei'ica,filed November 1, 1910.

In most impregnating processes the impregnating liquid is forced in through the outer longitudinal surface of'the timber. The penetration of the-liqu'idtakes lace in that case onlythrough the radial undies of cells or the so called inedullary rays. In theinterior of the wood, the distribution of the liquid takes place considerably more quickly throughthe axial bundles'of vesscls.-= In that way the quality and the cost of impregnation are depen'dent'on the struc tureof the timber to be impregnated, and

.more particularly on the number, size and distribution of the medullary cells. It will be obvious" that the impregnation of a compact kind of wood which has few medullary cells, would require considerably greater expenditure of pressure, time and money, than that of 'a kind of wood with numerous medullarygcells.

This invention on si'sts in increasing the number of the medullargkrays which render possible the penetration of liquid, by means mined beforeh nd by the number,

of small openings onpricks leading from the surface into the interior of the wood, artificially produced in any desired manner and acting as artificial medullary rays and facilitating the'penetration ofthe liquid to a greater or less extent which can be detersize depth and dist ibution of the said openings:

These artific' l medullary rays must be, however,, pr 'duced inrsuch 'manner,

that they shoul form only' -so to say intermediate spac bet-ween the'cells, that is to say, the tool p oducing the pricks must as far as possible nly. push aside the cells, without.

Specification of Letters iPatent. it

ent degree to rotting.

Patented eb.a27, 1912.- m nmwing; originaia iicatibn filed November 1910, Serial No. 590,099. .-Divided and this'applica 'i- 1 "i tion filed November 18, 1911. Serial ,No. 661,164. v

removing considerable quantities; of, the. wood material. Holes produced by remov-L 55. ipg material, for instance by drilling,vowing to the destruction of the fibers of the place treated, reduce to a great extent the strength 4 of the stem, while pricks produced as far. as i I possible'without destruction of thc-,.tibers,

only by pushing aside or shifting the fibers, do not afi'ect-the strength atall. as the. bersfl' are not k nybut only shifted. ,"i

' Itis already lino,"n tomakei'incisions or, I

to boreholesin wood before impregnation, but all these openings were effected by severing or removing thewood fibers, while according to the. present invention the.

I pricks. are expressly made by pricking; with sharp needles, so that here the fibersare only 'displaced,but- .neither severed nor removed. The pricks are best produced '2 rotating steel needles'approximately'the size and shapeof sewing machine needles, and for ordinary telegraph poles the pricks need only beabout one inch deep. The pricks produced in this manner close completely afterthe impregnation, since due their elasticity, the merelydis'placed fibersu'eturnl during the.- impregnation to their original. position, consequently the wood is not we'akv 1 ened in the least by these pricks. t

Artificial medullary rays facilitate and accelerate the penetration of the liquid, an d on thQ-other hand enable tougher impregnating solutions to be used, and impregnation to becarried down to any desired depth. As, however, the degree of impregnation depends on the number and 'depth of the artificial medullary rays, itis possible, according to thi'sinvention, to impregmate to adifierent extent the portions of one and the, same stem exposed in a difli'er- As it is well known, the exposed upper portion, and the bottom portion. of electric poles embedded in the earth rotvery slowly, while the portions adjoining the surfaceofth'eground (both above and below the surface) owing' to the changing moisture and to the mushroom or fungi growth,- rotexceedingly quickly.

According to old processes, it was necessary to impregnatethe whole of the pole strongly zinorder to render the above mentioned sensitive zone capable of resistingrotting for -a, long time. "As, however, the said zone could fit be impregnated to a'greater extent than the other po'rtionsof the same pole, the upper and bottom portiog'swhieh are less sensitive, were --impregna"ted to a wasteful and unnecessary degree. According to this invention, the moresensitiveportions of the longitudinal timber to be impregnated, are provided with deeper, arificial .medullary rays, while the other portions are treated only to a smaller extent or not at all, so that I during the impregnation the liquid will penetrate into the more 'sensitihe portions to .a greaterdepthand in a larger quantity, while the other portions, will take up only as much liquid' as required for-their slight protection. Bj suitable distribution of arti:

to impregnate .the "dangerous zone to 'a greater depth, and nevertheless to effect 'a' cial medullary rays, it- 'is ftherefore. possible.

medulore quickly, so

advantage (b) the hitherto unattained high impregnation of the dangerous portion increases to an extraordinary degree the durability and consequently the value of the whole article (c) in spite of the deep impregnation of the dangerous portions, a considerable saving, up to 75% of impregnating liquid is eifectefd,--as the .zones'exposed to a smaller danger areimpregnated only to a depth corresponding to the actual requirements. i

What we claim is: An economicalprocess for impregnating timber, s'ueh as poles for aerial linesand the.

like, such process consisting in piercing small radial prielisiin the wood, by merely displacing the fiber thereof, said pricks being made deeper; here the wood is more exposed to decomposition, and impregnating "this prieked timbep'with a preserving fluid,

by pressure. In testimony whereof we have signed our names to this specification 1n the presence of two subscribing witnesses.

ANDREAS KOLOSSVARY. SAMUEL HALTENBERGER.

ERNST BERDENICH;

Witnesses: l HUGU KEMIENY,

JOHN J. RONTO. 

